Lecture 19 : 4 . 1 . 03
نویسندگان
چکیده
Approximation algorithms are used when we know a problem is hard. It is a way to consider optimization versions of function problems. For instance, given a 3-CNF formula, finding a maximal truth assignment is essentialy a MAX3SAT. Approximation algorithms return solutions that are close to the optimal in some way. So, if OPT (x) is the optimal solution for problem x, and A(x) is our approximate solution, one can consider the approximation ratio of algorithm A as
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تاریخ انتشار 2005